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摘要: 为了解决二维码在证件类应用中常常面临的冷僻字编码问题,以GB18030字符集为对象分析汉字编码特点,提出基于该标准的汉字与ASCII混合信息的PDF417编码方法。并针对当前广泛应用的16位编程工具,结合实例给出了一种拆分迭代编码算法来实现字节压缩模式,它能够在保证较高编码效率的基础上有效节省编码存储空间。